How Every Is Harnessing the World-changing Shift of Opus 4.5

December 28, 2025

TL;DR

Opus 4.5 can complete coding tasks from idea to working application, overcoming previous AI limitations of errors and hallucinations.
It can modify pre-written code, trace bugs through various layers of an app, and test features end-to-end like a human.
Developers can now build apps by simply describing desired outcomes, with AI agents handling the underlying code and execution.
The primary bottleneck in development has shifted from AI capability to the developer's ability to decide which features to prioritize.
Opus 4.5 enables a new coding philosophy emphasizing depth and delegation, and an architectural shift towards 'agent-native' apps.
The model allows for efficient parallel work, handling multiple projects simultaneously without context bleeding.
AI-controlled computer use for tasks like regression testing and UI validation is now reliable.
Agent-native apps offer faster feature development and iteration through prompt editing but come with higher costs and slower execution.
Skills can be loaded for specific tasks, keeping the context window clean and providing deeper knowledge to the AI when needed.

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